ASTROSAT CZTI

Data Quality Report

Orbit 21985

Creation date: 2024-06-27T18:34:54.869316
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_094T01_9000003248_21985cztM0_level2.evt modeM0/AS1A07_094T01_9000003248_21985cztM0_level2_quad_clean.evt
Size (bytes)578,710,080100,244,160
Size551.9 MB 95.6 MB
Events in quadrant A3,841,681659,762
Events in quadrant B3,917,129666,817
Events in quadrant C3,702,160626,759
Events in quadrant D5,597,804601,912

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157882
B0160742
C0152982
D0211382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68911331.930054%
B68921432.074869%
C68921201.741149%
D68926118.865351%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 9306 6891 3 3 0.03% 0.04%
B 9307 6892 14 14 0.15% 0.20%
C 9307 6892 0 0 0.00% 0.00%
D 9307 6892 530 530 5.69% 7.69%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 14 235 70434 360.12 974 956 192.9
A 13 254 12445 59.55 974 956 192.9
A 2 79 9763 45.65 974 956 192.9
B 3 64 81744 451.17 963 943 179.1
B 0 230 31073 168.24 963 943 179.1
B 12 111 21309 113.72 963 943 179.1
C 14 238 144668 688.08 908 919 208.9
C 9 54 13277 59.15 908 919 208.9
C 13 61 6417 26.32 908 919 208.9
D 1 52 1232222 5578.32 906 881 220.7
D 7 223 420764 1902.19 906 881 220.7
D 7 238 189131 852.83 906 881 220.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter